MEMS Microphone Module with I2S Interface for ESP32 Development

The INMP441 is a high-performance, low-power, digital-output, omnidirectional MEMS microphone with bottom port. The complete INMP441 solution includes a MEMS sensor, signal conditioning circuitry, analog-to-digital converter, anti-aliasing filter, power management, and an industry-standard 24-bit I2S interface. The I2S interface enables direct connection to digital processors such as DSPs and microcontrollers without requiring an external audio codec. The INMP441 offers a high signal-to-noise ratio and is well-suited for near-field applications. It features a flat wideband frequency response for high-fidelity, natural sound reproduction. Product Features: 1. Digital I2S interface with 24-bit data resolution 2. Signal-to-noise ratio: 61 dBA 3. Sensitivity: –26 dBFS 4. Frequency response: 60 Hz to 15 kHz 5. Supply current: 1.4 mA 6. Power supply rejection: –75 dBFS Interface Definitions: SCK: Serial clock input for I2S interface WS: Word select signal for I2S interface L/R: Left/right channel selection — low level selects left channel; high level selects right channel SD: Serial data output VCC: Power supply input (1.8 V to 3.3 V) GND: Ground Material: Metal and plastic Package Contents: 1 × INMP441 module